Relationships between lung cancer incidences and air pollutants.

Background: Statistics on lung cancer incidences and air pollutants show a strong correlation between air pollutant concentrations and pulmonary diseases. And environmental effects on lung cancer incidences remain highly unknown and uncertain in China.

Objective: This study aims to measure the relationships between different air pollutants and lung cancer incidences in Tianjin.

An effective measured data preprocessing method in electrical impedance tomography.

As an advanced process detection technology, electrical impedance tomography (EIT) has widely been paid attention to and studied in the industrial fields. But the EIT techniques are greatly limited to the low spatial resolutions. This problem may result from the incorrect preprocessing of measuring data and lack of general criterion to evaluate different preprocessing processes.